Recover damaged ext4 volume

Kan-Ru Chen
2009-04-15T05:35:08Z

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Hi,

It was a LVM lv formated to ext4 that can't mount anymore after
resize. Both e2fsck and dumpe2fs can not find valid superblock or backup
superblock.

However, I can still read and recognize some data from the volume using
hd. Is there any chance that I can get my files back?

Following is the output of findsuper, lines with wrong mount time are
stripped:

byte_offset byte_start byte_end fs_blocks blksz grp last_mount_time sb_uuid label
21140751872 21140750848 29059596800 1933312 4096 0 Mon Dec 8 18:27:59 2008 f4890ad8
21188896256 21188895232 29107741184 1933312 4096 0 Mon Dec 8 18:27:59 2008 f4890ad8
32368412672 32368411648 96792921088 15728640 4096 0 Thu Dec 11 22:57:22 2008 bd5e4f31
45592096256 45592095232 45847046656 248976 1024 0 Tue Dec 9 20:16:51 2008 931b7f03

- Kan

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